Conceptual Physics (12th Edition)

Published by Addison-Wesley
ISBN 10: 0321909100
ISBN 13: 978-0-32190-910-7

Chapter 6 - Think and Solve - Page 105: 31


The impulse is the change in momentum. Using an equation from page 93, solve for the average seat belt force. Let's deal only with the magnitudes of these quantities. $$Ft = \Delta(mv) = mv$$ $$F = \frac{(75 kg)(25 m/s)}{0.1 s} = 18,750 N$$
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